#pragma once
namespace Queue
{
    template <class T, class Container = deque<T>>
    class queue
    {
    public:

        queue()
        {}

        void push(const T& x)
        {
            _c.push_back(x);
        }

        void pop()
        {
            _c.erase(_c.begin());
        }

        T& top()
        {
            return _c.front();
        }

        const T& top()const
        {
            return _c.front();
        }

        size_t size()const
        {
            return _c.size();
        }

        bool empty()const
        {
            return _c.empty();
        }
    private:
        Container _c;
    };
}